Closures start at 9:30 p.m. on Friday, July 18 and go through 5:00 a.m. on Friday, July 25.

WSDOT crews will replace two expansion joints and make repairs to a support beam on the East Channel Bridge near Bellevue Way S.E.

For drivers who plan to take state Route 520 across Lake Washington, you'll still need to pay a toll. Officials say there are no plans to give drivers a break during the I-90 closure. Rates vary throughout the day.

​Putting extra pressure on the roads: Mariners fans making their way to Safeco Field for a stretch of home games, a Sounders match against England's Tottenham Hotspur club on Saturday, the annual Bite of Seattle and a gaming competition at Seattle Center this weekend, and President Obama will be in the Seattle area on Tuesday.

So why did WSDOT pick a busy week in July to disrupt the entire region's traffic flow? Summer sun means the best odds of being able to complete the work without any weather delays.